Similar to Hauptwerk but simpler: all in one box - just plug and play.
I bought this to tide our church over a period before the main organ was fixed. It has had just light use over a couple of years but is now no longer required.
The full spec can be seen here https://www.amazon.nl/-/en/Mlnarik-organ-Cecilia-Magna/dp/B07QB7D6P8
It has a range of combinations, the usual couplers, transposer, assisted bass etc.
Comes in manufacturer's box, with user manual, power and MIDI connection leads.
Do message me for more information.